Category · Unit Hub

Area Converters

Every area unit in one place — 73 units, 1,738 conversions, grouped by family with a live calculator on the right. Use the popular shortcuts and matrix below for the most common pairs, or scroll the directory to find any unit and its full set of conversions.

Written by Sunith Babu L, Ph.D., Lead Engineer Reviewed by Girish V Kulkarni Ph.D.

Area category hub 73 units · 1,738 conversions Published September 1, 2025 Last reviewed April 30, 2026 Updated May 28, 2026

Popular area converters

The 24 most-searched area pairs. Tap any pair to open its dedicated converter.

Acres to Square Feet1 ac = 43,560 ft² Square Feet to Acres1 ft² = 0.0000229568 ac Square Meters to Square Feet1 m² = 10.7639 ft² Square Feet to Square Meters1 ft² = 0.092903 m² Hectares to Acres1 ha = 2.47105 ac Acres to Hectares1 ac = 0.404686 ha Bigha (pucca) to Square Feet1 bigha = 32,558 ft² Square Feet to Bigha (pucca)1 ft² = 0.0000307 bigha Guntha to Square Feet1 guntha = 1,089 ft² Square Feet to Guntha1 ft² = 0.000919 guntha Cent to Square Feet1 cent = 435.6 ft² Square Feet to Cent1 ft² = 0.002296 cent Kanal to Square Feet1 kanal = 5,445 ft² Marla to Square Feet1 marla = 272.25 ft² Square Kilometers to Square Miles1 km² = 0.386102 mi² Square Miles to Square Kilometers1 mi² = 2.58999 km² Acres to Square Meters1 ac = 4,046.86 m² Square Meters to Acres1 m² = 0.000247 ac Hectares to Square Meters1 ha = 10,000 m² Square Meters to Hectares1 m² = 0.0001 ha Square Centimeters to Square Inches1 cm² = 0.155 in² Square Inches to Square Centimeters1 in² = 6.4516 cm² Ground (Chennai) to Square Feet1 ground = 2,400 ft² Are to Square Meters1 a = 100 m²

Conversion matrix

The 10 most-used area units, every pair as a clickable link.

From ↓ · To →	mm²	cm²	m²	km²	in²	ft²	yd²	mi²	ac	ha
mm²	—	mm→cm	mm→m	mm→km	mm→in	mm→ft	mm→yd	mm→mi	mm→acre	mm→hectare
cm²	cm→mm	—	cm→m	cm→km	cm→in	cm→ft	cm→yd	cm→mi	cm→acre	cm→hectare
m²	m→mm	m→cm	—	m→km	m→in	m→ft	m→yd	m→mi	m→acre	m→hectare
km²	km→mm	km→cm	km→m	—	km→in	km→ft	km→yd	km→mi	km→acre	km→hectare
in²	in→mm	in→cm	in→m	in→km	—	in→ft	in→yd	in→mi	in→acre	in→hectare
ft²	ft→mm	ft→cm	ft→m	ft→km	ft→in	—	ft→yd	ft→mi	ft→acre	ft→hectare
yd²	yd→mm	yd→cm	yd→m	yd→km	yd→in	yd→ft	—	yd→mi	yd→acre	yd→hectare
mi²	mi→mm	mi→cm	mi→m	mi→km	mi→in	mi→ft	mi→yd	—	mi→acre	mi→hectare
acre²	acre→mm	acre→cm	acre→m	acre→km	acre→in	acre→ft	acre→yd	acre→mi	—	acre→hectare
hectare²	hectare→mm	hectare→cm	hectare→m	hectare→km	hectare→in	hectare→ft	hectare→yd	hectare→mi	hectare→acre	—

About area measurement

Area is a fundamental geometric quantity equal to length squared. Every area unit is derived from a corresponding length unit by squaring it — a square meter is the area of a square one meter on each side; an acre originated as the area a yoke of oxen could plow in a day, standardized in 1959 as exactly 4,046.8564224 square meters. In the International System of Units (SI), the square meter (m²) is the standard unit of area, with the hectare (10,000 m²) widely used for land measurement worldwide except in the United States, which uses the acre.

India's area landscape is uniquely diverse, with regional traditional units coexisting alongside metric and imperial standards. The bigha is the most prominent example — it has six distinct standardized values depending on the state (UP, Bihar, West Bengal, Gujarat, Rajasthan, Assam), all listed in our directory. Similarly, the cent (South India, 1/100 acre), guntha (Maharashtra/Karnataka, 1/40 acre), kanal and marla (Punjab) remain the primary units in regional real estate. Modern Indian land records typically cite both the traditional unit and its metric equivalent. The directory below covers all 73 area units this site supports, from the subatomic shed (10⁻⁵² m²) to the township (93.24 km²).

All area units

Tap any unit to expand its full list of outgoing conversions. Units are grouped by family.

Metric / SI · 16 units · 558 conversions

Are (a) — 18 conversions

Are to Acre Are to Hectare Are to Square Attometer Are to Square Centimeter Are to Square Decimeter Are to Square Dekameter Are to Square Femtometer Are to Square Foot Are to Square Hectometer Are to Square Inch Are to Square Kilometer Are to Square Meter Are to Square Micrometer Are to Square Millimeter Are to Square Nanometer Are to Square Picometer Are to Square Yoctometer Are to Square Zeptometer

Hectare (ha) — 72 conversions

Square Attometer (am²) — 18 conversions

Square Centimeter (cm²) — 72 conversions

Square Decimeter (dm²) — 18 conversions

Square Dekameter (dam²) — 18 conversions

Square Femtometer (fm²) — 18 conversions

Square Hectometer (hm²) — 18 conversions

Square Kilometer (km²) — 72 conversions

Square Meter (m²) — 72 conversions

Square Micrometer (µm²) — 18 conversions

Square Millimeter (mm²) — 72 conversions

Square Nanometer (nm²) — 18 conversions

Square Picometer (pm²) — 18 conversions

Square Yoctometer (ym²) — 18 conversions

Square Zeptometer (zm²) — 18 conversions

Imperial / US Customary · 15 units · 444 conversions

Acre (ac) — 72 conversions

Rood (rood) — 19 conversions

Rood to Acre Rood to Hectare Rood to Square Centimeter Rood to Square Chain Rood to Square Foot Rood to Square Furlong Rood to Square Inch Rood to Square Kilometer Rood to Square Link Rood to Square Meter Rood to Square Microinch Rood to Square Mil Rood to Square Mile Rood to Square Millimeter Rood to Square Perch Rood to Square Pole Rood to Square Rod Rood to Square Thou Rood to Square Yard

Square Chain (ch²) — 19 conversions

Square Foot (ft²) — 72 conversions

Square Furlong (fur²) — 19 conversions

Square Inch (in²) — 72 conversions

Square Link (lk²) — 19 conversions

Square Microinch (µin²) — 19 conversions

Square Mil (mil²) — 19 conversions

Square Mile (mi²) — 19 conversions

Square Perch (perch²) — 19 conversions

Square Pole (pole²) — 19 conversions

Square Rod (rd²) — 19 conversions

Square Thou (thou²) — 19 conversions

Square Yard (yd²) — 19 conversions

US Survey · 5 units · 60 conversions

Homestead (homestead) — 12 conversions

Homestead to Acre Homestead to Hectare Homestead to Section Homestead to Square Centimeter Homestead to Square Foot Homestead to Square Inch Homestead to Square Kilometer Homestead to Square Meter Homestead to Square Millimeter Homestead to Square US Survey Foot Homestead to Square US Survey Mile Homestead to Township

Section (sec) — 12 conversions

Section to Acre Section to Hectare Section to Homestead Section to Square Centimeter Section to Square Foot Section to Square Inch Section to Square Kilometer Section to Square Meter Section to Square Millimeter Section to Square US Survey Foot Section to Square US Survey Mile Section to Township

Square US Survey Foot (sft²) — 12 conversions

Square US Survey Foot to Acre Square US Survey Foot to Hectare Square US Survey Foot to Homestead Square US Survey Foot to Section Square US Survey Foot to Square Centimeter Square US Survey Foot to Square Foot Square US Survey Foot to Square Inch Square US Survey Foot to Square Kilometer Square US Survey Foot to Square Meter Square US Survey Foot to Square Millimeter Square US Survey Foot to Square US Survey Mile Square US Survey Foot to Township

Square US Survey Mile (smi²) — 12 conversions

Square US Survey Mile to Acre Square US Survey Mile to Hectare Square US Survey Mile to Homestead Square US Survey Mile to Section Square US Survey Mile to Square Centimeter Square US Survey Mile to Square Foot Square US Survey Mile to Square Inch Square US Survey Mile to Square Kilometer Square US Survey Mile to Square Meter Square US Survey Mile to Square Millimeter Square US Survey Mile to Square US Survey Foot Square US Survey Mile to Township

Township (twp) — 12 conversions

Township to Acre Township to Hectare Township to Homestead Township to Section Township to Square Centimeter Township to Square Foot Township to Square Inch Township to Square Kilometer Township to Square Meter Township to Square Millimeter Township to Square US Survey Foot Township to Square US Survey Mile

Indian Subcontinent · 16 units · 368 conversions

Ankanam (ankanam) — 23 conversions

Bigha (Assam) (bigha) — 23 conversions

Bigha (Gujarat) (bigha) — 23 conversions

Bigha (Kachha, North India) (bigha) — 23 conversions

Bigha (Pucca, North India) (bigha) — 23 conversions

Bigha (Rajasthan) (bigha) — 23 conversions

Bigha (West Bengal) (bigha) — 23 conversions

Cent (ct) — 23 conversions

Decimal (Indian) (decimal_in) — 23 conversions

Ground (Chennai) (ground_chennai) — 23 conversions

Guntha (guntha) — 23 conversions

Kanal (kanal) — 23 conversions

Katha (Assam) (katha) — 23 conversions

Katha (Bengal) (katha) — 23 conversions

Katha (Bihar) (katha) — 23 conversions

Marla (marla) — 23 conversions

Other Regional · 10 units · 170 conversions

Arpent (French) (arpent) — 17 conversions

Chō (chō) — 17 conversions

Chō to Acre Chō to Arpent (French)Chō to Dunam (Metric)Chō to Dunam (Ottoman)Chō to Feddan Chō to Hectare Chō to Manzana Chō to Morgen (South Africa)Chō to Pyeong Chō to Square Centimeter Chō to Square Foot Chō to Square Inch Chō to Square Kilometer Chō to Square Meter Chō to Square Millimeter Chō to Tan Chō to Tsubo

Dunam (Metric) (dunam) — 17 conversions

Dunam (Metric) to Acre Dunam (Metric) to Arpent (French)Dunam (Metric) to Chō Dunam (Metric) to Dunam (Ottoman)Dunam (Metric) to Feddan Dunam (Metric) to Hectare Dunam (Metric) to Manzana Dunam (Metric) to Morgen (South Africa)Dunam (Metric) to Pyeong Dunam (Metric) to Square Centimeter Dunam (Metric) to Square Foot Dunam (Metric) to Square Inch Dunam (Metric) to Square Kilometer Dunam (Metric) to Square Meter Dunam (Metric) to Square Millimeter Dunam (Metric) to Tan Dunam (Metric) to Tsubo

Dunam (Ottoman) (dunam) — 17 conversions

Feddan (feddan) — 17 conversions

Feddan to Acre Feddan to Arpent (French)Feddan to Chō Feddan to Dunam (Metric)Feddan to Dunam (Ottoman)Feddan to Hectare Feddan to Manzana Feddan to Morgen (South Africa)Feddan to Pyeong Feddan to Square Centimeter Feddan to Square Foot Feddan to Square Inch Feddan to Square Kilometer Feddan to Square Meter Feddan to Square Millimeter Feddan to Tan Feddan to Tsubo

Manzana (manzana) — 17 conversions

Manzana to Acre Manzana to Arpent (French)Manzana to Chō Manzana to Dunam (Metric)Manzana to Dunam (Ottoman)Manzana to Feddan Manzana to Hectare Manzana to Morgen (South Africa)Manzana to Pyeong Manzana to Square Centimeter Manzana to Square Foot Manzana to Square Inch Manzana to Square Kilometer Manzana to Square Meter Manzana to Square Millimeter Manzana to Tan Manzana to Tsubo

Morgen (South Africa) (morgen) — 17 conversions

Pyeong (pyeong) — 17 conversions

Pyeong to Acre Pyeong to Arpent (French)Pyeong to Chō Pyeong to Dunam (Metric)Pyeong to Dunam (Ottoman)Pyeong to Feddan Pyeong to Hectare Pyeong to Manzana Pyeong to Morgen (South Africa)Pyeong to Square Centimeter Pyeong to Square Foot Pyeong to Square Inch Pyeong to Square Kilometer Pyeong to Square Meter Pyeong to Square Millimeter Pyeong to Tan Pyeong to Tsubo

Tan (tan) — 17 conversions

Tan to Acre Tan to Arpent (French)Tan to Chō Tan to Dunam (Metric)Tan to Dunam (Ottoman)Tan to Feddan Tan to Hectare Tan to Manzana Tan to Morgen (South Africa)Tan to Pyeong Tan to Square Centimeter Tan to Square Foot Tan to Square Inch Tan to Square Kilometer Tan to Square Meter Tan to Square Millimeter Tan to Tsubo

Tsubo (tsubo) — 17 conversions

Tsubo to Acre Tsubo to Arpent (French)Tsubo to Chō Tsubo to Dunam (Metric)Tsubo to Dunam (Ottoman)Tsubo to Feddan Tsubo to Hectare Tsubo to Manzana Tsubo to Morgen (South Africa)Tsubo to Pyeong Tsubo to Square Centimeter Tsubo to Square Foot Tsubo to Square Inch Tsubo to Square Kilometer Tsubo to Square Meter Tsubo to Square Millimeter Tsubo to Tan

Scientific / Physics · 5 units · 60 conversions

Barn (b) — 12 conversions

Barn to Acre Barn to Hectare Barn to Microbarn Barn to Millibarn Barn to Outhouse Barn to Shed Barn to Square Centimeter Barn to Square Foot Barn to Square Inch Barn to Square Kilometer Barn to Square Meter Barn to Square Millimeter

Microbarn (µb) — 12 conversions

Microbarn to Acre Microbarn to Barn Microbarn to Hectare Microbarn to Millibarn Microbarn to Outhouse Microbarn to Shed Microbarn to Square Centimeter Microbarn to Square Foot Microbarn to Square Inch Microbarn to Square Kilometer Microbarn to Square Meter Microbarn to Square Millimeter

Millibarn (mb) — 12 conversions

Millibarn to Acre Millibarn to Barn Millibarn to Hectare Millibarn to Microbarn Millibarn to Outhouse Millibarn to Shed Millibarn to Square Centimeter Millibarn to Square Foot Millibarn to Square Inch Millibarn to Square Kilometer Millibarn to Square Meter Millibarn to Square Millimeter

Outhouse (outh) — 12 conversions

Outhouse to Acre Outhouse to Barn Outhouse to Hectare Outhouse to Microbarn Outhouse to Millibarn Outhouse to Shed Outhouse to Square Centimeter Outhouse to Square Foot Outhouse to Square Inch Outhouse to Square Kilometer Outhouse to Square Meter Outhouse to Square Millimeter

Shed (shed) — 12 conversions

Shed to Acre Shed to Barn Shed to Hectare Shed to Microbarn Shed to Millibarn Shed to Outhouse Shed to Square Centimeter Shed to Square Foot Shed to Square Inch Shed to Square Kilometer Shed to Square Meter Shed to Square Millimeter

Historical / Pre-metric European · 6 units · 78 conversions

Arpent (Canadian) (arpent) — 13 conversions

Arpent (Canadian) to Acre Arpent (Canadian) to Carucate Arpent (Canadian) to Hectare Arpent (Canadian) to Joch Arpent (Canadian) to Morgen (Prussian)Arpent (Canadian) to Oxgang Arpent (Canadian) to Square Centimeter Arpent (Canadian) to Square Foot Arpent (Canadian) to Square Inch Arpent (Canadian) to Square Kilometer Arpent (Canadian) to Square Meter Arpent (Canadian) to Square Millimeter Arpent (Canadian) to Virgate

Carucate (carucate) — 13 conversions

Carucate to Acre Carucate to Arpent (Canadian)Carucate to Hectare Carucate to Joch Carucate to Morgen (Prussian)Carucate to Oxgang Carucate to Square Centimeter Carucate to Square Foot Carucate to Square Inch Carucate to Square Kilometer Carucate to Square Meter Carucate to Square Millimeter Carucate to Virgate

Joch (joch) — 13 conversions

Joch to Acre Joch to Arpent (Canadian)Joch to Carucate Joch to Hectare Joch to Morgen (Prussian)Joch to Oxgang Joch to Square Centimeter Joch to Square Foot Joch to Square Inch Joch to Square Kilometer Joch to Square Meter Joch to Square Millimeter Joch to Virgate

Morgen (Prussian) (morgen) — 13 conversions

Morgen (Prussian) to Acre Morgen (Prussian) to Arpent (Canadian)Morgen (Prussian) to Carucate Morgen (Prussian) to Hectare Morgen (Prussian) to Joch Morgen (Prussian) to Oxgang Morgen (Prussian) to Square Centimeter Morgen (Prussian) to Square Foot Morgen (Prussian) to Square Inch Morgen (Prussian) to Square Kilometer Morgen (Prussian) to Square Meter Morgen (Prussian) to Square Millimeter Morgen (Prussian) to Virgate

Oxgang (oxgang) — 13 conversions

Oxgang to Acre Oxgang to Arpent (Canadian)Oxgang to Carucate Oxgang to Hectare Oxgang to Joch Oxgang to Morgen (Prussian)Oxgang to Square Centimeter Oxgang to Square Foot Oxgang to Square Inch Oxgang to Square Kilometer Oxgang to Square Meter Oxgang to Square Millimeter Oxgang to Virgate

Virgate (virgate) — 13 conversions

Virgate to Acre Virgate to Arpent (Canadian)Virgate to Carucate Virgate to Hectare Virgate to Joch Virgate to Morgen (Prussian)Virgate to Oxgang Virgate to Square Centimeter Virgate to Square Foot Virgate to Square Inch Virgate to Square Kilometer Virgate to Square Meter Virgate to Square Millimeter

Frequently asked questions

What is the SI unit of area?

The square meter (m²). It is defined as the area of a square with sides of one meter. The hectare (10,000 m²) is also widely used for land measurement.

How many square feet are in one acre?

1 acre = 43,560 square feet exactly. This is defined by the 1959 International Yard and Pound Agreement, which set 1 foot = 0.3048 m and 1 acre = 4,840 sq yd.

What is one bigha in square feet?

It depends on the state. The pucca bigha (UP, Bihar) = 32,558 sq ft. The Bengal bigha = 14,400 sq ft. The Gujarat/Rajasthan bigha = 17,424 sq ft. Always confirm which regional definition applies to your land record.

How many square meters are in one hectare?

1 hectare = 10,000 square meters exactly = 100 ares = 2.47105 acres.

What is one cent of land?

1 cent = 1/100 acre = 40.4686 m² = 435.6 sq ft. The cent is the primary residential land unit in Kerala, Tamil Nadu, and Sri Lanka. In Bengal and Bangladesh, the same unit is called "decimal".

How precise are the conversions on this site?

All factors are stored exactly per BIPM/NIST/regional standards definitions. Indian regional units (bigha, katha) are flagged as approximate where their definitions vary by district. Displayed results are rounded only at the final step.

Source & reference

Definitions and conversion factors on this page follow the BIPM — International System of Units and the NIST guide to the SI. Imperial-to-metric conversions use the 1959 International Yard and Pound Agreement (1 yd = 0.9144 m exactly). Historical and ancient unit values follow standard reference works in metrology and archaeology.